12/9=5/x

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Solution for 12/9=5/x equation: 


D( x )

x = 0

x = 0

x = 0

x in (-oo:0) U (0:+oo)

12/9 = 5/x // - 5/x

12/9-(5/x) = 0

12/9-5*x^-1 = 0

-5*x^-1 = -4/3 // : -5

x^-1 = 4/15

-1 < 0

1/(x^1) = 4/15 // * x^1

1 = 4/15*x^1 // : 4/15

15/4 = x^1

x = 15/4

x = 15/4

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